Brain teaser﹕How to get the whipped cream?

（明報製圖）

【明報專訊】Pat is making a tiramisu. She has got all the ingredients from the grocery but she forgot her measuring cup! She can only make do with two unmarked containers of 400ml and 700ml. How can she measure out exactly 500ml whipped cream for her tiramisu?

Tips:

You may start by filling the 400ml cup, then transfer the content to the 700ml container... It sounds complicated, but actually only involves simple mathematical calculation!

(Answers on next text)

■Glossary

grocery (n) (生活食品及用品)雜貨店

make do with (phr v) 以......湊合用

container (n) 容器

whipped cream (n) 淡忌廉

[Smarties' Power English 第228期]

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